Solve the simultaneous equations:

5x-3y=12
2x-y=5

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.

Which statements are true about additional information for proving that the triangles are congruent check all that apply